Drill bit sharpening attachment



FIG. 1 is a front, top and side perspective view of the drill bit sharpening attachment showing our new design;

FIG. 2 is a front end elevational view thereof, the rear end being a mirror image of the front shown in FIG. 2;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for drill bit sharpening attachment, as shown and described. 